<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>快捷输入</title>

    <!-- link:css -->
    <link rel="stylesheet" href="style.css">
    <!-- script:src -->
    <script src=""></script>

</head>
<body>
    <!-- h2{标签内容} -->
    <h2>ceshi</h2>
    <div>yuanlairuci</div>

    <!-- div.test  .类名  -->
    <div class="test">

        <!-- div#2.testest  #id .类 -->
        <div id="2" class="testest">

            <!-- >子标签 +兄弟标签 ^上级标签 -->
            <!-- div#2.new{标签内容}+div#23.class>h1{ceshi} -->
            <div id="2" class="new">ceshizhexingbuxing</div>
            <div id="23" class="class">
                <h1>ceshi</h1>
            </div>


            <h1></h1>
            <div id="1"></div>
        </div>



        
    </div>
</body>
</html>